Ozone higher up in the atmosphere acts as a shield to prevent UV rays from reaching the Earth's surface These UV rays are responsible for which of the following diseases?
(i) Skin cancer (ii) Eye damage (iii) Lung cancer
(iv) Damage to immune system (v) Colour blindness

(i), (ii) & (iii)

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(i), (ii), (iv) & (v)

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(i), (iii), (v)

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(i), (ii), (iii), (iv) & (v)

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Solution

The correct option is A (i), (ii), (iv) & (v)
The disease cause by UV rays are
1. Skin cancer
2. Eye damage
3. Damage to immune system
4. Colour blindness

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(iii) Skin cancer
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Question 11
Excessive exposure of human beings to UV-rays results in
(i) Damage to immune system
(ii) Damage to lungs
(iii) Skin cancer
(iv) Peptic ulcers

(a) (i) and (ii)
(b) (ii) and (iv)
(c) (i) and (iii)
(d) (iii) and (iv)

Q. The excessive exposure of humans to ultraviolet rays results in :
(i) damage to immune system
(ii) damage to lungs
(iii) skin cancer
(iv) peptic ulcers

(a) (i) and (ii)
(b) (ii) and (iv)
(c) (i) and (iii)
(d) (iii) and (iv)

Q. Read the following statements carefully and select the incorrect ones.

(i) Development of the fertile top-soil takes centuries, but it can be easily removed due to human activities such as over-cultivation, unrestricted grazing, etc.
(ii) Waterlogging results in soil salinity.
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(iv) Ozone present in the stratosphere acts as a shield absorbing UV radiation coming from the Sun.
(v) Global warming can be controlled by increasing the use of fossil fuels.

Match the following:

$\begin{matrix} (i) & Water & (A) & Compound (ii) & Hydrogen & (B) & Element (iii) & Salt (iv) & Gold (v) & Carbon dioxide (vi) & Iron \end{matrix}$
The correct pairs are:-

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Ozone higher up in the atmosphere acts as a shield to prevent UV rays from reaching the Earth's surface These UV rays are responsible for which of the following diseases?(i) Skin cancer (ii) Eye damage (iii) Lung cancer(iv) Damage to immune system (v) Colour blindness

The correct option is A (i), (ii), (iv) & (v)The disease cause by UV rays are1. Skin cancer2. Eye damage3. Damage to immune system 4. Colour blindness

Ozone higher up in the atmosphere acts as a shield to prevent UV rays from reaching the Earth's surface These UV rays are responsible for which of the following diseases?
(i) Skin cancer (ii) Eye damage (iii) Lung cancer
(iv) Damage to immune system (v) Colour blindness

The correct option is A (i), (ii), (iv) & (v)
The disease cause by UV rays are
1. Skin cancer
2. Eye damage
3. Damage to immune system
4. Colour blindness